Ubuntu 13.10 : linux vulnerabilities (USN-2289-1)

The remote Ubuntu host is missing one or more security-related patches.

Description :

Sasha Levin reported a flaw in the Linux kernel's point-to-point
protocol (PPP) when used with the Layer Two Tunneling Protocol (L2TP).
A local user could exploit this flaw to gain administrative
privileges. (CVE-2014-4943)

Michael S. Tsirkin discovered an information leak in the Linux
kernel's segmentation of skbs when using the zerocopy feature of
vhost-net. A local attacker could exploit this flaw to gain
potentially sensitive information from kernel memory. (CVE-2014-0131)

An flaw was discovered in the Linux kernel's audit subsystem when
auditing certain syscalls. A local attacker could exploit this flaw to
obtain potentially sensitive single-bit values from kernel memory or
cause a denial of service (OOPS). (CVE-2014-3917)

A flaw was discovered in the Linux kernel's implementation of user
namespaces with respect to inode permissions. A local user could
exploit this flaw by creating a user namespace to gain administrative
privileges. (CVE-2014-4014)

Don Bailey discovered a flaw in the LZO decompress algorithm used by
the Linux kernel. An attacker could exploit this flaw to cause a
denial of service (memory corruption or OOPS). (CVE-2014-4608)

Don Bailey and Ludvig Strigeus discovered an integer overflow in the
Linux kernel's implementation of the LZ4 decompression algorithm, when
used by code not complying with API limitations. An attacker could
exploit this flaw to cause a denial of service (memory corruption) or
possibly other unspecified impact. (CVE-2014-4611).

Solution :

Update the affected linux-image-3.11.0-26-generic and / or
linux-image-3.11.0-26-generic-lpae packages.

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